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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 (
    1923, 1924, 1925, 1926, 1927, 1928, 1929, 
    1930, 1931, 5560, 5561, 5562, 5563, 
    5564, 5565, 5566, 5567, 5568, 5569, 
    5570, 5571, 5572, 5573, 5574, 5575, 
    5576, 5577, 5578, 5579, 5580, 5581, 
    5582, 5583, 5584, 5585, 5586, 5587, 
    5588, 5589, 5590, 5591, 5592, 5593, 
    5594, 5595, 5596, 5597, 5598, 5599, 
    5600, 5601, 5602, 5603, 5604, 5605, 
    5606, 5607, 5608, 5609, 5610, 5611, 
    5612, 1423, 1424, 1425, 1426, 1427, 
    5136, 5137, 5138, 5139, 5140, 5141, 
    6711, 1455, 5164, 1445, 5154, 1456, 
    5165, 1446, 5155, 1458, 5167, 1448, 
    5157, 1459, 5168, 5158, 1820, 1821, 
    1822, 1823, 1824, 1825, 1826
  ) 
  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"
  }
}