Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1273c8125f3dd9cabcb7c58995d2960ccc1908416d9f5c1c5edbfcc78145160' 
  AND token = 'NR0hK5iDHVoJEWd2Dx1Gm0rjmJbbb1DlsAefdKAdXjA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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