It’s still a question and part of long discussions whether the domains directly affects SEO or search rankings. But in a recent discussion with Google, nobody says yes, but nobody mentioned a no either.
Domain registration is a factor to know your website easily. That will help your readers easily search for your site by just typing the name of your site in the URL address. But in terms of web ranking, does it really helps?
For the record, there’s no search engine that confirmed that they are using the length of registration in domains as a factoring in scoring. It means, as of now, all the scoring are just based on content posts and traffic it gets.
Trying to think deeper for this scenario, for websites that are popular in its category, length of registration doesn’t matter. Because people already know their sites and could easily browse for it. But for non-popular sites that are struggling to get higher rankings, the domain registration’s length is important in order for the search engines to crawl for it, and have it added on their data banks.