Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ecddf28a1112bc47bb537941d93e638afb5b349609dc4ce37cf3de91fd5692f7' 
  AND token = 'hiZg64pDo5SFAauUT2/NdIsf/8f4hqtXXXxHSsxlh3Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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