Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63b520b90dbfb526cee5ed082e6d8a4e03530ffc9381b9d634dc89395f548679' 
  AND token = 'bRsQuc2YJgxzvYqQpykwl39RjX+sxO6Ik8uJNQ4438o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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