SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '82225c13b8e4138202a19427c8a90d1cb956678b82d8e665ce41bc0870f85006' 
  AND token = 'ZehZgH0GE/21PITrw6lnuKjXaA6lEGREBXUNHQoq8Yw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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