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 (
    2021, 2017, 2016, 1909, 1275, 1271, 1267, 
    1264, 1262, 1258, 1246, 1245, 1241, 
    1229, 1226, 1150, 1149, 1145, 1131, 
    1130, 1129, 1128, 1127, 1126
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00065

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "1.61"
    },
    "table": {
      "table_name": "cscart_product_review_prepared_data",
      "access_type": "ALL",
      "possible_keys": [
        "PRIMARY"
      ],
      "rows_examined_per_scan": 11,
      "rows_produced_per_join": 11,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "0.51",
        "eval_cost": "1.10",
        "prefix_cost": "1.61",
        "data_read_per_join": "176"
      },
      "used_columns": [
        "product_id",
        "storefront_id",
        "average_rating",
        "reviews_count"
      ],
      "attached_condition": "((`wearethehelpful_scalesta_net`.`cscart_product_review_prepared_data`.`storefront_id` = 0) and (`wearethehelpful_scalesta_net`.`cscart_product_review_prepared_data`.`product_id` in (2021,2017,2016,1909,1275,1271,1267,1264,1262,1258,1246,1245,1241,1229,1226,1150,1149,1145,1131,1130,1129,1128,1127,1126)))"
    }
  }
}