Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c9078fdf1a32b7ba4abb1c20637a221c31f7b600f444ac6fc9f6437e98a7f029' 
  AND token = '+UHQKVdkDcT3p7h1cHBuUaK/hGHH1SGUnjg7I89frLc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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