Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f481a428aab45450f276cf631aeca862b1cb54191b6e3949295473d09768c4a6' 
  AND token = 'T47iPzCSCOKfMZlGD3reIXD6lbTgHfa5IY14HOLj49E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}