Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab3e934b9c73bafc5070b6251593eb1baf263d689d809f976b36c35f3c83d16e' 
  AND token = 'dFKmNB56vmBV0K2GCt8E1vW2BmWfP3hkp8WH6H7jwbU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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