Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '738b0423df22aff409f7972be0b677857b4ebe14adb9f2c9fb79a1b4bb0e5ab1' 
  AND token = 'hlqmnL+/T/15fuhLILwy6TJfd55e/+h4ML/9AB2cTco=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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