Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb77a9a5c5dc6cd92454741095f8a6c476c1836162f1f52d5413210f498db0fd' 
  AND token = 'tHrRYtxqk2zv8VzNWH40zZC8ownOlm/7qrnmtSBRWIk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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