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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 (
    1836, 1336, 1837, 1820, 1304, 1738, 1893, 
    1895, 1894, 1641, 1500, 1317, 1670, 
    1658, 1669, 1558, 1644, 1262, 1552, 
    1398, 1595, 1576, 1870, 1691
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}