Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1dc228a07cbc0f820016b9278ba2c1470ce2e7adf9d296010c71e107d2552675' 
  AND token = 'oaJAsnJKKtQTsoRIsj6sboRzDAahf560GUOjWw69I6Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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