Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6d58f042b4522f97d452a081a13227d2a7752eccd1cc971ccdfeb8a68aa97eef' 
  AND token = 'tR+TLMOC9E4Duh9GgNAOdIGPYFoX9TH6w/ka8K3xkag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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