Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd60a8333f63f62441772a5e989693f25909df4bc26a8b042f89b8220a33d34f4' 
  AND token = 'OPQH1elgUo2GpYhe4oAgb5rIzgZrWcHzSVJVOfdOXLI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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