Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38f9642b91a8cb0fb8165173c20b4092db5be022db90bcf433d9c6ea7e97a250' 
  AND token = 'J3EL/oD6YtnCWa0phyvM+wWtubfsSb7jEGIIrYW6sV0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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