Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c9096946cc694e87d7122f05a44aa4d14420f95ecd5f427e4ec9f2a7e05db403' 
  AND token = 'YBg3PrwXsnNhGfKe9G2OBlDPWrRzHoVnCGvBh9/0O1E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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