I have a Macbook pro mid 2014 with intel iris and intel core i5 processor 16GB of RAM. I am planing to learn some ray-traced 3D. But, I am not sure, if my laptop can render fast
Yes, you can, because OpenCL is supported by MacOS natively.
From your question it appears you are not seeking advice on programming, which would have been the appropriate subject for Stack Overflow. The first search hit on Google explains how to turn on OpenCL accelerated effects in After Effects (Project Settings dialog -> Video Rendering and Effects), but I have no experience with that myself.