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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 (
    1598, 5272, 5273, 5274, 5275, 5276, 5277, 
    5278, 5279, 5280, 5281, 5282, 5283, 
    5284, 5285, 5286, 5287, 5288, 5289, 
    5290, 5291, 5292, 5293, 5294, 5295, 
    5296, 5297, 5298, 1546, 1547, 1548, 
    1549, 1550, 1551, 1552, 1553, 1554, 
    1555, 1556, 1557, 1558, 1559, 1560, 
    1561, 1562, 1563, 1564, 1565
  ) 
  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 0.00034

JSON explain

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