Kaspersky makes extremely respected antivirus software. But it is not necessary for your situation, IMHO. Macs can get malware, but it's not a common event. When it does happen, it is generally annoying adware or an application that is disguised as some sort of cleaning or optimization app that is not necessary and tries to sell you something. If you are practicing safe browsing habits, are only opening .dmg files from trusted sources, and aren't opening sketchy attachments or auto downloads such as spoofed flash updates, you are good to go without needing any sort of AV software. For that matter, Malwarebytes (another very respected name) is more than sufficient in removing the most common Mac malware (again more annoyances such as adware than something more serious) and paid 'live' protection is not necessary (i.e., use it only as an on-demand scan should you suspect malware.)
That said, if you are not already, be sure to use FileVault to encrypt the Mac and enable two factor authentication with the Apple account.