UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'eMT/8Mqoe6MuVtib6K0bSL3KwFXtbGo4clZaNRyGk1o=' 
WHERE 
  key_id = '508c8e94ccd8d8591d3a9e29bec404a31071358911dc6754cdec931b0458625d' 
  AND (
    token = 'eMT/8Mqoe6MuVtib6K0bSL3KwFXtbGo4clZaNRyGk1o=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )