A person sentenced prior to July 1, 2004, for a first-time drug offense, pursuant to section 706-622.5, and who otherwise meets all the requirements of section 706-622.5, may apply to the court for expungement of the record of conviction for the drug offense. The court shall issue a court order to expunge the record of conviction for the drug offense; provided the person has successfully completed a substance abuse treatment program and has complied with the other terms and conditions set by the court. A person granted an expungement of conviction under this section or section 706-622.5(4) shall not be eligible for another expungement of conviction under this section or section 706-622.5.