Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07e5f95da48f483a6dc8e3098c0af1eb65fb6e2c6dffdc87d62e611b22a288ef' 
  AND token = 'Uz24ilNRoPWR6JkW+R4AVfBJ62HXJpEnd736dviwmMw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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