Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '12b36d42c77a1b6706b8a8625d8741e0a150086edb8a3caf81301d29e14c021e' 
  AND token = 'BOC86b0iCDBVXnJS/BbHKAYlUagVJ9E7Xu1VByW4kwQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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