Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13b570441770690a5f957895e1ae464eb6740c628ff8f3d8b4cfa317a4729a34' 
  AND token = 'N3pyhbeR0P/u3A8gOpOshQxdBwit6qRJ6hDLAMkrYnE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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