Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13f66b1a0c155164f6b4e7d2bf79c31aa85712c9aaa66eb3b0fb0392704f1e31' 
  AND token = 'FXaPI0OrcVTRqA5k/nHJd1BwZNIwVA89hP7NUuOWmQI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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