Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20b9062c0800aaee560e97b935a9527b09e77308e07d51accdd22cf13ae03cca' 
  AND token = 'JlMGHbhmPhCKVqkEuHPwHM/j6Et1Z9grvxSiwnjDoEU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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