code: public function loadTokenBySeries($series): PersistentToken
      {
          $sql = '
              SELECT
                  class, username, value, lastUsed
              FROM
                  tl_remember_me
              WHERE
                  series=:series
          ';
  
          $values = [
              'series' => hash_hmac('sha256', $series, $this->secret),
          ];
  
          $types = [
              'series' => \PDO::PARAM_STR,
          ];
  
          $stmt = $this->connection->executeQuery($sql, $values, $types);
  
          if (!$row = $stmt->fetch(\PDO::FETCH_OBJ)) {
              throw new TokenNotFoundException('No token found.');
          }
  
          return new PersistentToken($row->class, $row->username, $series, $row->value, new \DateTime($row->lastUsed));
      }
docs: {@inheritdoc}