UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '/MGccPFKdZOL1Wlxibehc6H76fCih9gSKtADV45VCIY=' 
WHERE 
  key_id = '38bb4ef2164b0ca9a2e5e47ffcbeb8cd1cff806a5c322f28d3879f5dde31800b' 
  AND (
    token = '/MGccPFKdZOL1Wlxibehc6H76fCih9gSKtADV45VCIY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )