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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 (
    6106, 6107, 6108, 1653, 2224, 1599, 1572, 
    2603, 6191, 2509, 1626, 2281, 2282, 
    2283, 2284, 2285, 2331, 2332, 2333, 
    2334, 2335, 2403, 2404, 2405, 2406, 
    2407, 2408, 2409, 2410, 2411, 2599, 
    2600, 2601, 2602, 5881, 5882, 5883, 
    5884, 5931, 5932, 5933, 5934, 6003, 
    6004, 6005, 6006, 6007, 6008
  ) 
  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 0.00027

JSON explain

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