Pirate sites rarely die; they migrate. If the old .com domain is dead, MKVCinemas might have moved to .in, .net, .ru, .to, or .art.
Even if the domain hasn't been seized, your Internet Service Provider (ISP)—such as Airtel, Jio, Comcast, or Vodafone—is likely blocking the site. Following court orders (like the John Doe orders in India), ISPs are required to block URLs hosting pirated content. mkvcinemas site not opening