Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1946c4b714c38c60ecb206959e1fe4bf501d707aab5cf94278420ac00c48cc23' 
  AND token = 'GpSgVfL0bgF/s8mPMoI9EqU5B7M96ywMoAJYyRn8S14=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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