Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b635e9fb8114a7bdf692603dfd5e9081240276f6f6a0d9faf6603b189f8b144' 
  AND token = 'kt+Y49XWPkWZnZIBMEykBvgaMD9BTUe9cfweFyTcJM4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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