UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'xmEcuH54eI+LWqb91LJ9OPAIePOnKyp3jZSMRGv/lXE=' 
WHERE 
  key_id = '268754b7b6c90468139172cf365b74338b2266600e77e7bffc8897eeda804c03' 
  AND (
    token = 'xmEcuH54eI+LWqb91LJ9OPAIePOnKyp3jZSMRGv/lXE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )