Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0532d49dd2403f2139b039f52b908c5e98c617f6c6cecc2afcf2d78b940d0140' 
  AND token = 'lkx3Z/X5GcXUdw6fFE95c8uyuaUdp7VHF5lZc2E8xFo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}