Police stopped a vehicle on the Dundrod Road at Nutts Corner at about 21:30 GMT on Friday and seized a large quantity of suspected cocaine.
Det Insp Alan Pyper said: "We put the value of the drugs in the region of about £60,000, however the substance will be subject to forensic testing."
The arrested man remains in custody and is being questioned by police.
A 53-year-old man has been arrested after police discovered drugs worth an estimated £60,000 in County Antrim.