SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd77fe6dfbf5fde4f5d84349981aac7596ce377e91d8442e63d21c022ffa26c67' 
  AND token = 'wKX9EZwVVMbST+F3qy5u0YODG/jGEgNp6AetKFpiVQA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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