UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'DFqt6Il3MRtF/Bbfvl2xnCqwasSx760t2mswzudgVpM=' 
WHERE 
  key_id = '81b79c5b20951d759cbbd2e670a83f32a316723078e2d54014e9223ff815be88' 
  AND (
    token = 'DFqt6Il3MRtF/Bbfvl2xnCqwasSx760t2mswzudgVpM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )