Django REST Framework Auth Token

I'm having a little trouble with Token Authentication in the Django REST Framework. From the docs I know it is a matter of implementing the following:

from rest_framework.authtoken.models import Token

token = Token.objects.create(user=...)
print token.key

Now my question is, what exactly goes in the argument of Token.objects.create(user=...). The answer here helps and it says That will provide a Token model which is foreign-keyed to User. I'm not sure I understand this.

I have my own model of Users defined like so:

class Users(models.Model):
    userid = models.IntegerField(primary_key=True)
    username = models.CharField(max_length=255L, unique=True, blank=True)
    email = models.CharField(max_length=255L, unique=True, blank=True)
    password = models.CharField(max_length=64L, blank=True)
    registeredip = models.CharField(max_length=255L, blank=True)
    dob = models.DateField(null=True, blank=True)
    firstname = models.CharField(max_length=255L, blank=True)
    lastname = models.CharField(max_length=255L, blank=True)
    joindate = models.DateTimeField()

    class Meta:
        db_table = 'Users'

How would I create a token for users that satisfy certain conditions in this case?

# View Pseudocode
from rest_framework.authtoken.models import Token

def token_request(request):
    if user_requested_token() and token_request_is_warranted():
        new_token = Token.objects.create(user=request.user) #What goes here?

Any help or leads to any more documentation/examples would really help me out here. Thank you!