Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e928c576af3f9b5ac67a5a35ffa444d06e527c308c936a64428f0c4227998de' 
  AND token = 'm3ObIeVnYSUQNJp2o+QuEFZUks848z2rEJCX/TGZA4Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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