Mo. Rev. Stat. § 311.088
Any person possessing the qualifications and meeting the requirements of this chapter who is licensed to sell intoxicating liquor by the drink at retail for consumption on the premises in a home rule city with more than four hundred thousand inhabitants and located in more than one county may be issued a special permit by the state and such city. Notwithstanding the provisions of section 311.089 to the contrary, the special permit issued under this section shall allow the licensed premises to sell intoxicating liquor from 6:00 a.m. until 3:00 a.m. on the morning of the following day within one twenty-four hour period. Any person granted a special permit under this section shall only be authorized to receive up to six such special permits from the city in a calendar year. For every special permit issued under the provisions of this section, the permittee shall pay to the director of the department of revenue the sum of fifty dollars.
§ 311.088, RSMo