Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '888b82d7ee7f7c7f96b3d6c6ccdfa9a9c0ffd71f1405ea39faae6baf8ade4fe5' 
  AND token = 'hJlTRe4YR319G3gC4I8bK+UHDXuPKWpQvHlWyaIGIs0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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