SELECT 
  1 
FROM 
  tmall_lock_keys 
WHERE 
  key_id = 'ddb8cf82900226522e881916fa8907c1fcbf6b7b5cff9b4e317d482477f5fb23' 
  AND token = '4UMFhN3rK9n+pqYPgIJtjozV493mp3g1h7jlICYIv/w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.01515

JSON explain

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