Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '799295151c3908791cb2f6cef72c7fbbaa6c26114f866e7eee923bb29969d9f5' 
  AND token = 'OVO0V6wnwEt7otMK4atejN6rQd9XYKR1qQ3R/vMd0mU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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