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 (
    8591, 8596, 8597, 8601, 8621, 8618, 8594, 
    8607, 8605, 22293, 21641, 21379, 21655, 
    55945, 21647, 21636, 21648, 21650, 
    21645, 40908, 22297, 21644, 21651, 
    21642, 40617, 21654, 21643, 21652, 
    21656, 21639, 21653, 37524, 37891, 
    21649, 21646, 55935, 21640, 37892, 
    54840, 55933, 37894, 54841, 37896, 
    60463, 54847, 54846, 55608, 54844, 
    60473, 55936
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00071

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "35.01"
    },
    "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": 50,
      "rows_produced_per_join": 50,
      "filtered": "100.00",
      "index_condition": "((`cscartdb`.`cscart_product_review_prepared_data`.`storefront_id` = 0) and (`cscartdb`.`cscart_product_review_prepared_data`.`product_id` in (8591,8596,8597,8601,8621,8618,8594,8607,8605,22293,21641,21379,21655,55945,21647,21636,21648,21650,21645,40908,22297,21644,21651,21642,40617,21654,21643,21652,21656,21639,21653,37524,37891,21649,21646,55935,21640,37892,54840,55933,37894,54841,37896,60463,54847,54846,55608,54844,60473,55936)))",
      "cost_info": {
        "read_cost": "30.01",
        "eval_cost": "5.00",
        "prefix_cost": "35.01",
        "data_read_per_join": "800"
      },
      "used_columns": [
        "product_id",
        "storefront_id",
        "average_rating",
        "reviews_count"
      ]
    }
  }
}