Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f63cc434d5f47f35471a60a333edaed6e14d2a62cb849018b011fcff474d68d' 
  AND token = 'RI8Tf/sPN7IhBQ1wtYjynhqiNnpd8UiQpO4D14UsaQs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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