django优化查询

我需要在Django orm中查询俱乐部列表的终点.对于用户是俱乐部所有者或用户是锦标赛裁判的俱乐部(end_date为空，或者end_date比现在更近).

我有模特:

class User(AbstractBaseUser):
    id = models.UUIDField(default=uuid.uuid4, primary_key=True, max_length=128)
    ...

class Club(models.Model):
    id = models.UUIDField(default=uuid.uuid4, primary_key=True, max_length=128)
    owner = models.ForeignKey(User, on_delete=models.SET_NULL, blank=True, null=True)

class Tournament(models.Model):
    id = models.UUIDField(default=uuid.uuid4, primary_key=True, max_length=128)
    club = models.ForeignKey(Club, on_delete=models.CASCADE)

class TournamentReferee(models.Model):
    id = models.UUIDField(default=uuid.uuid4, primary_key=True, max_length=128)
    tournament = models.ForeignKey(Tournament, on_delete=models.CASCADE, related_name='tournament_referee')
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    end_date = models.DateTimeField("access expire date", blank=True, null=True)

我像这样创建了我的查询，但也许有更好的方法来使用单个查询来完成它？

    def get_queryset(self):
        if self.request.method == 'GET':
            now = datetime.datetime.now()
            referee_clubs_list = TournamentReferee.objects.filter(Q(user=self.request.user), (Q(end_date__isnull=True) | Q(end_date__gte=now))).values_list('tournament__club_id')
            return Club.objects.filter(Q(owner=self.request.user) | Q(id__in=(referee_clubs_list)))
        return super().get_queryset()