The very first opportunity you'll have to net this one isn't until level 43, as that's literally the only timed level up until that point. You begin with 2 minutes on the clock, so of course you only have 1 minute and 30 seconds to complete it.
My original advice would've been to use ONLY the 4-brick long "l" shaped blocks, though that proved to waste too much time if the game didn't send them to me fast enough.
Rather than try working your way to the throne though, you should actually start at the throne and make your way back. Use the large open spaces inbetween the walls as the perfect time to change the bricks from horizontal/vertical as doing so anywhere else runs the risk of you taking just a split-second too long and having them stick to a wall, which most of the time can ruin the entire thing. The game also throws a hefty amount of Ghost Blocks at you, without taking them away from your own stash of Boosts. Use these whenever possible to bridge up any remaining gaps, especially to conserve some time. If you find you've connected everything, but still haven't reached the target score, slap a Gargoyle on the end for good measure, as since it's above water, the points boost will more than likely bump you up!
When I managed to finally get it, my time left was 58 seconds, so it only took me just over a minute~
Might take a few times to get it down, but it's definitely possible!
Should anyone need further clarification on the method used, lemme know in the comments and I'll try my best to update! If people are really stuck, I'll even try uploading a recording of how I did it myself~ Good luck guys!