SELECT 
  cscart_product_review_prepared_data.product_id AS product_id, 
  cscart_product_review_prepared_data.average_rating AS average_rating, 
  cscart_product_review_prepared_data.reviews_count AS reviews_count 
FROM 
  cscart_product_review_prepared_data 
WHERE 
  cscart_product_review_prepared_data.product_id IN (
    30395, 30818, 30374, 30287, 30313, 30566, 
    30434, 30499, 30242, 30164, 30304, 
    30432, 30542, 30165, 30397, 30445, 
    30495, 30483, 30564, 30209, 30221, 
    30577, 30473, 30392, 30557, 30450, 
    30516, 30606, 30349, 30362, 30595, 
    30599, 30102, 30521, 30213, 30422, 
    30573, 30338, 30100, 30312
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00061

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "28.01"
    },
    "table": {
      "table_name": "cscart_product_review_prepared_data",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "storefront_id"
      ],
      "key_length": "7",
      "rows_examined_per_scan": 40,
      "rows_produced_per_join": 40,
      "filtered": "100.00",
      "index_condition": "((`cscartdb`.`cscart_product_review_prepared_data`.`storefront_id` = 0) and (`cscartdb`.`cscart_product_review_prepared_data`.`product_id` in (30395,30818,30374,30287,30313,30566,30434,30499,30242,30164,30304,30432,30542,30165,30397,30445,30495,30483,30564,30209,30221,30577,30473,30392,30557,30450,30516,30606,30349,30362,30595,30599,30102,30521,30213,30422,30573,30338,30100,30312)))",
      "cost_info": {
        "read_cost": "24.01",
        "eval_cost": "4.00",
        "prefix_cost": "28.01",
        "data_read_per_join": "640"
      },
      "used_columns": [
        "product_id",
        "storefront_id",
        "average_rating",
        "reviews_count"
      ]
    }
  }
}