UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Vs2G8r9CP0ud6dgppVuI1cRrzuvwAHeIy1BPW0pZ3ok=' 
WHERE 
  key_id = 'a51fed6695c98f251b524448970c5136af3d81c76b297dfad1b43b0dd1b73cf9' 
  AND (
    token = 'Vs2G8r9CP0ud6dgppVuI1cRrzuvwAHeIy1BPW0pZ3ok=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )