Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07f47d1b23b4e046b07baf66e9623c40a20a1ffab2059c49e9c79dc01b7b6a2a' 
  AND token = 'JfISpfcsrq7b8M3hcDS2AiP6LsgaWO14znlvG+EW53s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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