SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    20536, 7390, 20534, 7376, 7375, 20532, 
    7401, 20537, 26767, 40659, 7450, 7534, 
    7591
  )

Query time 0.00082

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "9.11"
    },
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 13,
      "rows_produced_per_join": 13,
      "filtered": "100.00",
      "index_condition": "(`cscartdb`.`cscart_products`.`product_id` in (20536,7390,20534,7376,7375,20532,7401,20537,26767,40659,7450,7534,7591))",
      "cost_info": {
        "read_cost": "7.81",
        "eval_cost": "1.30",
        "prefix_cost": "9.11",
        "data_read_per_join": "69K"
      },
      "used_columns": [
        "product_id",
        "lead_time",
        "etsy_id",
        "product_code",
        "product_type",
        "status",
        "company_id",
        "list_price",
        "amount",
        "weight",
        "length",
        "width",
        "height",
        "shipping_freight",
        "low_avail_limit",
        "timestamp",
        "updated_timestamp",
        "usergroup_ids",
        "is_edp",
        "edp_shipping",
        "unlimited_download",
        "tracking",
        "free_shipping",
        "zero_price_action",
        "is_pbp",
        "is_op",
        "is_oper",
        "is_returnable",
        "return_period",
        "avail_since",
        "out_of_stock_actions",
        "localization",
        "min_qty",
        "max_qty",
        "qty_step",
        "list_qty_count",
        "tax_ids",
        "age_verification",
        "age_limit",
        "options_type",
        "exceptions_type",
        "details_layout",
        "shipping_params",
        "facebook_obj_type",
        "parent_product_id",
        "allow_notes",
        "buy_now_url",
        "master_product_id",
        "master_product_status",
        "master_product_offers_count",
        "variation_sku",
        "has_color",
        "color_feature_id",
        "featured",
        "shopify_parent_product_id",
        "shopify_variant_product_id"
      ]
    }
  }
}

Result

product_id lead_time etsy_id product_code product_type status company_id list_price amount weight length width height shipping_freight low_avail_limit timestamp updated_timestamp usergroup_ids is_edp edp_shipping unlimited_download tracking free_shipping zero_price_action is_pbp is_op is_oper is_returnable return_period avail_since out_of_stock_actions localization min_qty max_qty qty_step list_qty_count tax_ids age_verification age_limit options_type exceptions_type details_layout shipping_params facebook_obj_type parent_product_id allow_notes buy_now_url master_product_id master_product_status master_product_offers_count variation_sku has_color color_feature_id featured shopify_parent_product_id shopify_variant_product_id
7375 { "from": "1","to": "2"} P A 69 0.00 4 0.000 0 0 0 0.00 0 1714246788 1714246799 0 N N N N P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 N 0 A 0 0 0
7376 { "from": "1", "to": "3"} P A 69 0.00 4 0.016 0 0 0 0.00 0 1714246887 1723031076 0 N N N Y P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 N 0 A 0 0 0 0
7390 { "from": "1","to": "2"} P A 69 0.00 2 0.000 0 0 0 0.00 0 1714246971 1714246971 0 N N N N P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 N 0 A 0 0 0
7401 { "from": "1", "to": "3"} P A 69 0.00 3 0.016 0 0 0 0.00 0 1714247043 1723031581 0 N N N Y P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 Y 0 A 0 0 0 0
7450 { "from": "1", "to": "3"} P A 69 0.00 2 0.016 0 0 0 0.00 0 1721907958 1721907970 0 N N N N P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 Y 0 A 0 0 0 0
7534 { "from": "1", "to": "3"} P A 69 0.00 10 0.000 0 0 0 0.00 0 1720151522 1720151522 0 N N N N P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 Y 0 A 0 0 0
7591 { "from": "1", "to": "3"} P A 69 0.00 5 0.000 0 0 0 0.00 0 1722387476 1722387476 0 N N N N P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 Y 0 A 0 0 0 0
20532 { "from": "1", "to": "3"} 041_5 P A 103 0.00 6 0.125 0 0 0 0.00 0 1718241115 1718399674 0 N N N N P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 Y 0 A 0 0 0
20534 { "from": "1", "to": "3"} 047_2 P A 103 0.00 6 0.125 0 0 0 0.00 0 1718402066 1718403261 0 N N N N P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 Y 0 A 0 0 0
20536 { "from": "1", "to": "3"} _11 P A 103 0.00 6 0.125 0 0 0 0.00 0 1718403464 1718403862 0 N N N N P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 Y 0 A 0 0 0
20537 { "from": "1", "to": "3"} 006 P A 103 0.00 4 0.125 0 0 0 0.00 0 1718404025 1718404121 0 N N N N P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 Y 0 A 0 0 0
26767 { "from": "5", "to": "7"} ShoeHarn-001 P A 182 0.00 20 0.500 0 0 0 0.00 0 1719081868 1719083493 0 N N N N P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 Y 0 A 0 0 0
40659 { "from": "1", "to": "3"} FauxLeatherBowAnklet P A 307 0.00 12 0.000 0 0 0 0.00 0 1722507995 1723025457 0 N N N Y P N N N Y 10 0 N N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0 N 0 A 0 0 0 0