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SELECT 
  cscart_ult_product_prices.product_id, 
  MIN(
    IF(
      cscart_ult_product_prices.percentage_discount = 0, 
      cscart_ult_product_prices.price, 
      cscart_ult_product_prices.price - (
        cscart_ult_product_prices.price * cscart_ult_product_prices.percentage_discount
      )/ 100
    )
  ) AS price 
FROM 
  cscart_ult_product_prices 
WHERE 
  cscart_ult_product_prices.product_id IN (
    1566, 1567, 1568, 1569, 1570, 1571, 5245, 
    5246, 5247, 5248, 5249, 5250, 5251, 
    5252, 5253, 5254, 5255, 5256, 5257, 
    5258, 5259, 5260, 5261, 5262, 5263, 
    5264, 5265, 5266, 5267, 5268, 5269, 
    5270, 5271, 1600, 1601, 1602, 1603, 
    1604, 1605, 1606, 1607, 1608, 1609, 
    1610, 1611, 1612, 1613, 1614, 1615, 
    1616, 1617, 1618, 1619, 1620, 1621, 
    1622, 1623, 1624, 1625, 5299, 5300, 
    5301, 5302, 5303, 5304, 5305, 5306, 
    5307, 5308, 5309, 5310, 5311, 5312, 
    5313, 5314, 5315, 5316, 5317, 5318, 
    5319, 5320, 5321, 5322, 5323, 5324, 
    5325, 1627, 1628, 1629, 1630, 1631, 
    1632, 1633, 1634, 1635, 1636
  ) 
  AND cscart_ult_product_prices.lower_limit = 1 
  AND cscart_ult_product_prices.company_id = 1 
  AND cscart_ult_product_prices.usergroup_id IN (0, 0, 1) 
GROUP BY 
  cscart_ult_product_prices.product_id

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}