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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 (
    1749, 1750, 1751, 1752, 1753, 1754, 1755, 
    1756, 1757, 1758, 1759, 1760, 1761, 
    1762, 1763, 1764, 1766, 1767, 1768, 
    1769, 3739, 3740, 3741, 3742, 5415, 
    5416, 5417, 5418, 5419, 5420, 5421, 
    5422, 5423, 5424, 5425, 5426, 5427, 
    5428, 5429, 5430, 5431, 5432, 5433, 
    5434, 5435, 5436, 5437, 5438
  ) 
  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 0.00025

JSON explain

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