Sandbox

SELECT 
  1 
FROM 
  tmall_lock_keys 
WHERE 
  key_id = 'dd01e81cb8cb16f9af19b14daa4b06c61dbf86a6ae86c8f6eb6aad9611f34da3' 
  AND token = 'Fat1uj3yMJP18Z8yn/IBdHT0N0cpZ8GNzF+YGMfMbCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00902

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}