SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59a275e177140f40b6f18c87a5cb905432963d659c2b25b6518cd29dceba01f4' 
  AND token = 'Bk5w2lU2x8Y4CZrctvcsSJ3Hv+GncGiqHf4aI4gJhP0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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