SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c331e5b2ba00f935515b27c1caf296684e5b419cc235b8b6161f1ab92187ede' 
  AND token = 'hipd23zhgKTkGYQF/5Obhvp7ByNwflmJV7ZvRB0UJzM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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