Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dae035353cdd96473513175cb9155b70c0f6f7618a58b320946cb75f36b09fd3' 
  AND token = 'er6yxHA/fJ65B7Z8Yt8TY6Bwcuz5TY3Znl62QmaEoSA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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