Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41e1313c28746630d0f5f6c4557bc7e3edb348de24cddfdfa43c2c5048efc05d' 
  AND token = 'E7gxdqt9crNz+lAlo4JRyM6ct5YSHMpjYA+hJn0lf0E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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