Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1aeff05806b923a7ec0698854d0b9f37807c44738ec1524c807835a369260dd8' 
  AND token = 'R8moaRFvpuTECVq+YND256U/ibptoGx9YLWh0EtPijk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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