UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'k81r0uT9TsL09zYLmHKv/ccUv76W8w3ySy9f6g6OCLI=' 
WHERE 
  key_id = 'b703c976ee4e2424aa556809edd13d8e8d97f528205d8c771fc0fe4cb1c34ced' 
  AND (
    token = 'k81r0uT9TsL09zYLmHKv/ccUv76W8w3ySy9f6g6OCLI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )