Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13f130ce4c8fff6edbaf41b8cf29eb1040e2141fc391c7ae03d167f9f30bd2cd' 
  AND token = 'rrsE3P+OvZF8hP0YCOvZ1zVzUg79rQORu0/mSjpeN+Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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