Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56b4424bffd8028f41494d3d17b16fca8fced67d88c314cd3f52064969a4bf68' 
  AND token = 'Q9J95rxGtiomWv01jskPJ7tIgE7tGcmQFH6PzH0Q4jU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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