SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22c009329436db39a34e91b62d348f1794ced8ad073b2163315afe78a69888d5' 
  AND token = 'jBrwob2EPIKlFXSrZMDsMkdYuDt2xMMZUhAqPvR++8E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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