Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '175e5185064d71b53e9aa1a96ca8cfad131730fc2f0ecf64de67ae4c272b8761' 
  AND token = '/KLE8Ak774Bc9TO2dF1infaihU5xFfrG6Dz4bqOCy7Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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