UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'xb3TyCmgb7MOSqs6A9hyxT61OmO2x9ZsX+iZNaReiUk=' 
WHERE 
  key_id = '393a67743dfbe7159ab9a8e3018fd8c2cb7d2df9b6077c51cdd6efc9273a2061' 
  AND (
    token = 'xb3TyCmgb7MOSqs6A9hyxT61OmO2x9ZsX+iZNaReiUk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00016