Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ca7007e3d571a88f0dd5b9c1fb46420e959ab8a047f83e71e0aa4dc7a9cef207' 
  AND token = 'sOkS4qjOGd2vjRs74tnilzxfRpyGUctG1C0TUw7/yRg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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