Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60098d63e702e2b40586b94d8a3102691594b00b27cd9dc56d7f1455aca47a6a' 
  AND token = '/LYflzgQfbrAcxWomVuXuM2i9S7RB3FKFSSxYYzYL5A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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