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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 (
    5549, 5550, 5551, 5552, 5553, 5554, 5555, 
    5556, 5557, 5558, 5559, 1457, 5166, 
    1447, 5156, 5169, 3162, 1450, 5159, 
    1440, 5149, 1451, 5160, 1441, 5150, 
    1453, 5162, 1443, 5152, 1770, 1771, 
    1772, 1773, 1774, 1775, 1776, 1777, 
    1778, 1779, 1780, 1781, 1782, 1783, 
    1784, 1785, 1786, 1787, 1788, 1789, 
    1790, 1791, 1792, 1793, 1794, 1795, 
    1796, 1797, 1798, 1799, 1800, 1801, 
    1802, 1803, 1804, 1805, 1806, 1807, 
    1808, 1809, 1810, 1811, 1812, 1813, 
    1814, 1815, 1816, 1817, 1818, 1819, 
    3744, 3745, 3746, 3747, 5461, 5462, 
    5463, 5464, 5465, 5466, 5467, 5468, 
    5469, 5470, 5471, 5472, 5473
  ) 
  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 0.00026

JSON explain

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