Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e8dd5bb42ff6db6ec6077fcf6210cfbb2a6031425d437902ea58125ecda6ea7' 
  AND token = '3nKFowpK0k/S/9EEqt7ecykLqVKV6GVvFld44A1gG/A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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