Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bf8e4e0efbb0bfae594cbd61810bb500132855603e24bdc9ec46999b4f200aa' 
  AND token = '0oMNWexDs0Wq5EVxt/iaNDy26siIgAgtFinse4sw1dA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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