The 20 year-old dropped Carter in the opening seconds before finishing the job before the first minute with a crushing right hand.
Carter was knocked out cold and down for several minutes as Dubois moved to 5-0 with a fifth successive early night.
Super middleweight prospect Umar Sadiq made a successful debut by scoring a 40-36 points win over Lewis van Poetsch, whilst in the same division, Lerrone Richards made it to 9-0 with a convincing 60-53 points win over Ferenc Albert.
Richards floored Albert in the opening round and never looked back as he notched up another victory.
Also on the bill, welterweight Hamzah Sheeraz stopped Duane Green in his first professional contest.