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 (
    1068, 1071, 1083, 1077, 1069, 1082, 1072, 
    1084, 1076, 1065, 1073, 1078
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00037

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_product_review_prepared_data",
          "access_type": "ALL",
          "possible_keys": ["PRIMARY"],
          "rows": 51,
          "filtered": 23.52941132,
          "attached_condition": "cscart_product_review_prepared_data.storefront_id = 0 and cscart_product_review_prepared_data.product_id in (1068,1071,1083,1077,1069,1082,1072,1084,1076,1065,1073,1078)"
        }
      }
    ]
  }
}