Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23ffe22788515e7134c86c5403b27594569c95f226bddb7ed584ca99a30b0220' 
  AND token = 'l7NhwizrjRVOtsdEb0+QKVn7rzyZXFNlC4Sd7D9PhJs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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