SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2191d1b3c8cdb34c613eb1fdffcbf7751800f1a3d899945cfec499c2f12a45ae' 
  AND token = 'ijAGVz97vteF6MRjbhfjAA//ByCbW8xgXlJCk4/PV4w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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