Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '594d0efea1ac4db607a7c8cdc2c5cae9176413224f847704c7b8da99d783b86e' 
  AND token = 'xuW/iAQTrgFURu2mh9X9s6kRyUR74U78osg4gWWc2nk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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