SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '71183dcc205e108e3d56c9f674d5061f08aba4a94b3fa7b90d67746cff5156f4' 
  AND token = 'M2zUj5Iy1Q9ZYlxF9IIMXChzKqE5f+X4nLv/HtnRkXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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