Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1cae5e6d13f72d40aa61dfbfcf2deac00394049bb6c7fab5d31eee62c6e00b6d' 
  AND token = 'gRqrM8c0H9ETICN1r6NHdkH3HOOScZ4OxxfEfowwPlg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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