I disagree. And I will your example to explain.
I have this piece of text that is english, and yes, when I do work with the piece of text, that work will be in english. This is where we diverge... because we all know Latin is used in most major languages... at least parts and pieces, and latin is also used in science and other branches of study... so screw all our languages... lets just do everything in latin.
Thats your logic. My logic, is to use the tools of the framework. Laravel has provided us a nice tool in Eloquent, and sure, if you want to go with straight mysql, go for it... but mixing is a bad idea.
My advise to the OP is simple, is this specific query different on your system? As in, is the majority of your application using eloquent or mysql? If it is using eloquent, then I would suggest converting. If you are using mostly mysql... id advise to see what your end goal is... are you going to be converting everything to use eloquent models? OR will it mostly stay as mysql. Do not jump to a conclusion because somebody says the system will convert it... you want uniformity in your code... otherwise you will hate yourself when you must maintain it... trust me... i have learned this from experience.