Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '79e1f1df7e4621954451d86f16923b337942950fa6df582835ec1b1fd4c325f3' 
  AND token = 'kfmDqY2ah+qa5nk9JkhSb8uncEGaqgl0V+bYf7Ra7qo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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