Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b807d518a203e68e8a3988ceff99195482cb4588121ea7db2ad668f93d15f36' 
  AND token = 'q4FKYl/U6cx4iAm/lNzfXOmGYJ4tWFC62HO5ITtkDtE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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