I don't believe such an API exists. I think your best bet might be to load the Response Tokens page (Adobe Target > Administration > Response tokens) and increase the items per page to max and then copy the data from the page. As response tokens do not change frequently this might be a feasible solution for you. You can also see the status and just use the "activated" response tokens if you want.
I suppose you could try and manually call the graphql POST request the page makes to fetch that data, but when I looked at the response body I wasn't seeing the status information. You possibly would need to combine data from multiple requests to get what you need if you go that route.