Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '680e97a3635065fbb107523155f453ba006312fd599c8c69621c04416fbe61ca' 
  AND token = 'CEHl6Fwr2eobWas3cGddgGz6ss8TEc9afpWpQeM+Cg4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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