Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c950c50e41a1f7bed19d04fced31f3c8adaee751e740831fb68155c79d484b3' 
  AND token = 'pkn6PfWWumai/PwoM1j/DXuk38tWJuOvB0LtrEtFfjk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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