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 (
    1418, 3136, 2040, 2041, 2042, 2043, 2044, 
    2045, 2046, 2047, 2048, 2049, 2050, 
    2051, 2052, 2053, 2054, 2055, 2056, 
    2057, 2058, 2059, 2060, 2061, 2062, 
    2063, 2064, 2065, 2066, 2067, 2068, 
    2069, 2070, 2071, 2072, 2073, 2074, 
    2075, 2076, 2077, 2078, 2079, 2080, 
    2081, 2082, 2083, 2084, 2085
  ) 
  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 0.00019

JSON explain

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