Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd944f009fd305ede12ccdba07de9a0c1dbbc56c744eb02a1204d20f1abce06e' 
  AND token = 'atWJyi0XTnDMP3f7OUxDOkU9vlx5qOWcdbLpomqqBVc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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