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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 (
    426, 1791, 1792, 1793, 1794, 1795, 1796, 
    1797, 1798, 1799, 1800, 1801, 1802
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_product_review_prepared_data",
      "access_type": "ALL",
      "possible_keys": ["PRIMARY"],
      "rows": 57,
      "filtered": 22.807,
      "attached_condition": "cscart_product_review_prepared_data.storefront_id = 0 and cscart_product_review_prepared_data.product_id in (426,1791,1792,1793,1794,1795,1796,1797,1798,1799,1800,1801,1802)"
    }
  }
}