UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'dW4tgE4SEficXRQ2k8G4jrkGUNHoZqBGJx2E3IWwOJs=' 
WHERE 
  key_id = '5a51768794c350c9f17c471515c34c16c237e36af09673f48e28654790000387' 
  AND (
    token = 'dW4tgE4SEficXRQ2k8G4jrkGUNHoZqBGJx2E3IWwOJs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )