Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23e87ec3d407f4c83670c6ca60e99da23890f2b2a13cdffede385b84771c4a5f' 
  AND token = 'dFB/oiZt46D2WfrNovndgk3JvmIOCSexvXiB493gk/4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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