SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92035fe1f8025a019e6afcfdfe6c2b0ae76935776700ec22f6039e8b92dec2db' 
  AND token = '/I1D+OwydvxKjFuvbp5QxVmHRxbVwP/B5TNglKzwwIg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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