Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32ec487ee0eb4a4fde3eed427a6134eb3e4171e781ead300792c1c8c75029354' 
  AND token = '2dGiGXeHjTKxuChd97WWKyu61JqvMgP1xZgQfiwyDJU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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