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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 (
    1448, 5157, 1459, 5168, 5158, 1820, 1821, 
    1822, 1823, 1824, 1825, 1826, 1827, 
    1828, 1829, 1830, 1831, 1832, 1833, 
    1834, 1835, 1836, 1837, 1838, 1839, 
    1840, 1841, 1842, 1843, 1844, 1845, 
    1846, 1847, 1848, 1849, 1850, 1851, 
    1852, 1853, 1854, 1855, 1856, 1857, 
    1858, 1859, 1860, 1861, 1862
  ) 
  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 0.00036

JSON explain

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