Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '031a920e0900675ca0287930e4e581c0e8fc7d4ea3e7b8ee12c4767844b40955' 
  AND token = '2fSYOgF8rXZePX6vf0Ifb5wVKjkBZ8Vg5nKacoEhADw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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