UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'RKshrJI7rIBzVPZVqyBCNPQjj6+r5lgwgplThU31si0=' 
WHERE 
  key_id = '51b1bc1ff43b3d083914bbc58637a2f0d5fcddde8e0e718636b45fca4918f128' 
  AND (
    token = 'RKshrJI7rIBzVPZVqyBCNPQjj6+r5lgwgplThU31si0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )