CI 3.1.9 session timeout issue

My config.php session settings

$config['sess_driver'] = 'files';
$config['sess_cookie_name'] = 'ci_session';
$config['sess_expiration'] = 0;
$config['sess_save_path'] = sys_get_temp_dir();
$config['sess_match_ip'] = FALSE;
$config['sess_time_to_update'] = 86400;
$config['sess_regenerate_destroy'] = FALSE;
$config['sess_match_useragent'] = FALSE;

CI 3.x Mysql 5.x PHP 5.x