Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd04bb1ca007830a1c6587b101bfacb954e8a94925ebbeef49cbd207e186a48dd' 
  AND token = 'E8E6MbHh7rMwEuiyMESWquhfpAYvzAoN9gOkztXAw0o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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