Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c731be208292ad32c32ddeda3ea85866853a21d452f308297d35b4c3404b23e3' 
  AND token = 'IWSfmQ0YdY94RSk4jP4W/zdRjVlJSGz6PBpp+PJTycU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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