If you, by out of the box, mean installer or ISO boot support, the answer is no.
Secure Boot is not secure as it does not secure anything.
What it is designed to do, is to verify if the given binary loader is signed by a certificate stored in NVRAM.
No: Manjaro does not implement secure boot
Yes: You can setup Verified (Secure) Boot on Manjaro
Read the following proof of concept article. Do note there is other ways to achieve the same goal, this is how I have done.
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