Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97358e92fae1caaf24b9a8f564f58dba589ba2332d9c40bc82eebda75bffe417' 
  AND token = 'upMMy4SW/5n8GBQjTgN6IFHqH9vk0gWUmLRJ/ao0oyI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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