Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5acb9ff5ca2b0a69b12d3ac86b49c14fffe9c91538e58f2201819c2467a22596' 
  AND token = 'f4doh3FkPPAxoI6HrNlY0fb0K/qnHhgH6S8a8bbb8xw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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