Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5b226e2b17e9d1f5a6aaf88312e8ab360ffaf360d54aa279b38d70cc8eafb09f' 
  AND token = 'Y1tOVE6lRV05vPX5gjirqyQf2r06woSXenh9vTYZo6A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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