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From your comment in the post, I guess you already figured out what wrong? i.e. Something is funky about your VirtualBox setup?
I cloned your app and it only took 88ms to load on my Mac. 
BTW, your code does not run out of the box. Had to fix and bypass a couple things to get it to run. I would also suggest you install laravel-debugbar to help with debug in laravel.
Source:stackexchange.com