Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1bf2c5183563e3494f7be0577bae36563e0b35b73b9512518bd48f1b86605220' 
  AND token = 'QaIfTRwuOd+0wit1e0VORqWV6GS6R9BE14AqEoT0h1o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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