Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2d3bbcb58c278e0f1a381e3bef821726a1498cd3ac8a416e1e811ff95d93aab0' 
  AND token = 'SaYzNZOdRUa9L02xKYV3PpyKimSlSlnU2WtUeNIV7Ps=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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