The queriesInPastMin param of http://api.hypixel.net/key is reset every minute, but the reset time is not known. It is not exactly at a whole minute, nor is it relative. If it was relative, a script could then be easily implemented to avoid key throttles and use it's 120 queries per minute. The best solution I found was to send around 115 requests and then ping /key and detect a reset. But this limits the requests to 115 a minute and throttles if you use the key yourself. Seriously. This is not that hard to fix.