Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e904cacd44cfdeda75e4c5adc117c7a8ded7a9f7109c78d2f4ecb62fff0bf63' 
  AND token = '3gO2wMY1QIG8K6eJqZZIpbeZN2T6vg7dsCNFwIaVhRw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}