Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a58d291c6658889c7aaab71f74729112d83d7bf38b8220e0a602f60cc9f41d76' 
  AND token = 'X8FaGu8TqRL8eHIi45azE6VQvB3RZYf4n8QHa0wZ/40=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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