Clean keyboard on Macbook Pro 2017
You are correct, there is no room to remove the keys now. 

I would highly recommend never trying to remove the key cap from any of the new low travel keyboards. The keys are part of the top case assembly, and are expensive for third party repairs. (And similarly close tolerance on Bluetooth keyboards)

Apple have a very well illustrated procedure now using compressed air only to clean. If that doesn’t work, I would contact Apple support directly and ask for options. 


https://support.apple.com/en-us/HT205662




MacBook cleaning image - from Apple