Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '584c22f9273be9c14e82f1c66c9abcb103abfd0310be8742560c13937fac0ecc' 
  AND token = '6SLeDxY8Lp6QrUIMI4BA8XQq38DtNYgQnRlZIxLLv9U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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