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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 (
    1955, 1956, 1957, 1958, 1959, 1960, 1961, 
    1962, 1963, 1964, 1965, 1966, 1967, 
    1968, 1969, 1970, 1971, 1972, 1973, 
    1974, 1975, 1976, 1977, 1978, 1979, 
    1980, 1981, 1982, 1983, 1984, 4253, 
    4254, 4255, 4256, 4257, 4258, 4259, 
    4260, 4261, 5614, 5615, 5616, 5617, 
    5618, 5619, 5620, 5621, 5622, 5623, 
    5624, 5625, 5626, 5627, 5628, 5629, 
    5630, 5631, 5632, 5633, 5634, 5635, 
    5636, 5637, 5638, 5639, 5640, 5641, 
    5642, 5643, 5644, 5645, 5646, 5647, 
    5648, 5649, 5650, 5651, 5652, 5653, 
    5654, 5655, 5656, 5657, 5658, 5659, 
    5660, 5661, 5662, 5663, 5664, 5665, 
    5666, 5667, 3137, 1473, 1474
  ) 
  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 0.00030

JSON explain

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