UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Qxnu48Fcywh2pGsm7dkm595PR6syJQmCsA/I6inL77E=' 
WHERE 
  key_id = 'c4e415adc1328ef0715059354f2a81cc870757205d5224732313d8bd38562167' 
  AND (
    token = 'Qxnu48Fcywh2pGsm7dkm595PR6syJQmCsA/I6inL77E=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )