SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'be2d34e9f6b0ed6754f23a17ab9e32e5e8b3b0492603e85bf34e34af5764eeb5' 
  AND token = 'Wirwvf0thKvz78RTjlGnk2scpU/zNZl2pLOxmJhCbR4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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