SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44a24b6f11234de7e583c7db9fa7112b7273177d16f71a006e7b78cac2d64819' 
  AND token = 'sDXBHWTjnA2JKp4wHLgysn6Tjhl3CIscIVpqOpvP8Rs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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