Yeah it’s a bit complex to build from scratch but if you just care about the token you use one of the samples to do this.
If you are good with php @abraham has a nice demo you can use:
If you are good with asp.net, you build something very quickly with these steps:
https://docs.microsoft.com/en-us/aspnet/core/security/authentication/social/twitter-logins?view=aspnetcore-2.1&tabs=aspnetcore2x
If you can’t be bothered with installing anything you can use a web browser and Postman to do all the 3 legged requests and manually move the parameters from one request to the next one.
Any of this should take less than one hour.
Alternatively you can transfer your account, but it might take several weeks to get done.
(There is also advantage to having multiple tokens, you can use one for production one for testing etc)
Hope this helps.