Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc073b948ce3b7c4fc4f8d955d7601b1140485f49a459c57118c4735eef919b5' 
  AND token = 'ySGpZQwlW9Qew9gWICFn4HvYg3Ki7n9G3yiyx0zXwxc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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