Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '943e2867e4bdce6b32dab7d2435d5cd59242f8c68ed770ab35c72a9fbe67006e' 
  AND token = 'rrDfknX8MC8uApSqnxk4fLtrpLCzYiRnhWDQ4mecTcI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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