Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59c2a608ccb5ebdf1b835bc50d8264c0bf3636ae045b7e45c4153b541752dc06' 
  AND token = 'oXlNC79flLz90OflvKL3CMX6U8jgwEwlsiV/xskm6A0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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