UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'U3ElhjYo5LAKr4S2jhteN37KUl7G4TuT6UioMEmKaYk=' 
WHERE 
  key_id = '6d04f8f4a2d93783a0ffa6d0d4be05103654dc9c0176e68cbf7b5e2b00e00883' 
  AND (
    token = 'U3ElhjYo5LAKr4S2jhteN37KUl7G4TuT6UioMEmKaYk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )