Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '30b3e8950abdbfe184aab4fadf939f5512a3e7c1c527ff0698a7ad42260d04e8' 
  AND token = '95nePIMfBbjJEDZkYDT4Is3COZ9TY6upYNu8524ASwQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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