Sandbox

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 (
    5439, 5440, 5441, 5442, 5443, 5444, 5445, 
    5446, 5447, 5448, 5449, 5450, 5451, 
    5452, 5453, 5454, 5455, 5456, 5457, 
    5458, 5459, 5460, 6727, 1672, 1673, 
    1674, 1675, 1676, 1677, 1678, 1679, 
    1680, 1681, 1682, 1683, 1684, 1685, 
    1686, 1687, 1688, 1689, 1690, 1691, 
    1692, 1693, 1694, 1695, 1696, 1697, 
    1698, 1699, 1700, 1701, 1702, 1703, 
    1704, 1705, 1706, 1707, 1708, 1709, 
    1710, 1711, 1712, 1713, 1714, 1715, 
    1716, 1717, 1718, 1719, 1720, 3733, 
    3735, 3736, 3737, 3738, 5371, 5372, 
    5373, 5374, 5375, 5376, 5377, 5378, 
    5379, 5380, 5381, 5382, 5383, 5384, 
    5385, 5386, 5387, 5388, 5389
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00031

JSON explain

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