Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '224eece33238756ffbbadb8cf40498bc856bd820bf918e53c2c3bcccbfde4e91' 
  AND token = 'MvgOrOc4KYFe4zJhrJaaZ9qCwlb1PZui/33YCk/WWkM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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