Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59e01ea81e1ece5182e84b7fef3c5d5f54e24c547380e620b61b41b6ee0f723d' 
  AND token = 'e4LRPbBjB3mluFyag4UrSpIgUJ98MoiDWGDvHJCGD1s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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