When should you use a search engine?

Question

MySQL

There is an application on Laravel 5.1
Database Percona v5.6
In different categories, if you do a search, it comes out:
Users: 40-45k
Other1: 10k
Other2: 10k
Other3: 10k
So far, I am implementing a search on Laravel through the database.
Question:
Is it worth connecting any search engine? Or is the power of Laravel enough?
What to consider when implementing a search? How to write requests through ORM or without?
If you take the engine (if you need it), then which engine?

Answer 1

enough power of Laravel

Answer 2

if you are not satisfied with the speed or quality of the current search, if it suits you, then you do not need to connect it.

Answer 3

When you need to search in all fields, well, or a very large number of queries.