The lien of a judgment may be enforced in a court of equity after an execution or fieri facias thereon has been duly returned to the office of the court or to the justice from which it issued showing by the return thereon that no property could be found from which such execution could be made: Provided, That such lien may be enforced in equity without such return when an execution or fieri facias has not issued within two years from the date of the judgment. If it appear to such court that the rents and profits of the real estate subject to the lien will not satisfy the judgment in five years, the court may decree such real estate, or any part thereof, to be sold and the proceeds applied to the discharge of the judgment.