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 (
    9810, 9817, 9818, 9821, 9863, 9866, 9883, 
    9904, 9962, 9210, 9299, 7591, 7592, 
    7627, 7631, 7646, 7651, 7656, 7658, 
    7716, 7718, 7720, 7721, 7723
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "1.00"
    },
    "table": {
      "table_name": "cscart_product_review_prepared_data",
      "access_type": "ALL",
      "possible_keys": [
        "PRIMARY"
      ],
      "rows_examined_per_scan": 5,
      "rows_produced_per_join": 5,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "0.50",
        "eval_cost": "0.50",
        "prefix_cost": "1.00",
        "data_read_per_join": "80"
      },
      "used_columns": [
        "product_id",
        "storefront_id",
        "average_rating",
        "reviews_count"
      ],
      "attached_condition": "((`softwarepirmam_hewadelivard_cscart_4`.`cscart_product_review_prepared_data`.`storefront_id` = 0) and (`softwarepirmam_hewadelivard_cscart_4`.`cscart_product_review_prepared_data`.`product_id` in (9810,9817,9818,9821,9863,9866,9883,9904,9962,9210,9299,7591,7592,7627,7631,7646,7651,7656,7658,7716,7718,7720,7721,7723)))"
    }
  }
}