Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6dccf1fe16bca4cde5dd8701d7d1586945697038fd905d19dfe03b914a8de000' 
  AND token = '2tTDDgQ82Ka885JqjKx4gFzfFuzKSdt8sGHrGfMVd4w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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