Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0cbf01de99c73e77d60e98370d6eb5aa68861a2cea0d456317b9957577642e0d' 
  AND token = 'QBW3X5ZM9o3J9XkTNnNByW7Rht2UkZVNkI+DO7oSlKU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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