Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d033a0d06be60f9c3796719f8509959b197ef114de3ccae4ea4ba0611933878' 
  AND token = 'dmDK8gZ7I44zbjJo9xWo0/jD88rE++8A5PCP/++IPpA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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