Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65c50d35f1907c1a3d65fe7ad09f43f337c70901c468c3ae1b9506e52b835d23' 
  AND token = 'VYu2qPC9B8TrcSUPoFjio0lw4bkYOFUgYA+jqf8OQIU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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