Nothing contained in sections 11-55-107 to 11-55-110 shall be so construed as to prevent the payment of any public security, or the interest having accrued thereon prior to or at its maturity, after the period specified in section 11-55-107 has passed, and the issuing body of such public security is authorized by sections 11-55-107 to 11-55-110 to make such payment if it deems it in its best interests so to do.