UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MDcDVVhdOjCmQMtbuTyksHVaiWUu2wCJWUHihvKB52E=' 
WHERE 
  key_id = 'b8993da96cb7e7fa755a3a2e0de5ee3ec950e4bd9d7047d383c02037f651d0fd' 
  AND (
    token = 'MDcDVVhdOjCmQMtbuTyksHVaiWUu2wCJWUHihvKB52E=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )