Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1dda4c8308781828ea5cbd844870c0a4c3e505a0fbe51770697b91895380b4e9' 
  AND token = 'BdfGNGg+9uyXk4bvFUBOqjKpWWLW/IuplWRIVGQR5lk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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