public function getToken($id)
    {
        $row = $this->_db->query(
            'SELECT token FROM '.$this->_dbConfig['table']
                          .' WHERE '.$this->_dbConfig['id'].' = :id',
            [':id'=>$id]
        );
        if (isset($row[0])) {
            $row = $row[0]->getAll();
            return $row[$this->_dbConfig['token']];
        }
        return false;
    }