UPDATE 
  q_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'TzEIHN0Tg8vrKB2zjpfnHIE30gmAPDW97fsY+RAsfck=' 
WHERE 
  key_id = '8704f809839513d6056fed8fa68d9908d53a0da9a9efde0aeada58fcbde3afe8' 
  AND (
    token = 'TzEIHN0Tg8vrKB2zjpfnHIE30gmAPDW97fsY+RAsfck=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )