Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfbdf3b93400482b3432d871b797d26d75dad837370f9572b607829d9aad2261' 
  AND token = 'DxNpPRUw2GII/vIJp0/yYDrF1z762mFMCd2EurJXd1M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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