As others have mentioned, they should be available in anywhere from 1 to 3 days.
I have a feeling that There’s Poop In My Soup is not a GOTY contender, but still find it interesting that more people haven’t claimed a key. Most likely they are comparing the amount of coins needed to what the shop has previously contained, in which case it does seem quite expensive (and also compared to the game that released alongside it for 3750 coins or something like that).
Now I don’t have anything to go by but my own experiences, but in 30 days of checking chrono.gg I have amassed just shy of 5k coins. If the current trend continues this means that I can get one or two games each month for pretty much no effort, which I think is almost too good, even if the games aren’t the best. Especially when considering that there are 4 games (currently) to choose from each month and the amount of keys for the games combined is most likely orders of magnitude smaller than the amount of users. And there have been some great games in the coin shop too! Thus I expect to see price of coin shop games to go up quite a bit in the future. Other coin sinks might also emerge, but I guess this is a discussion for another thread.
Edit. Reformatted the link: