Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7afc06d9200334e926d05e7f7a2501fd76978d36d90373f68959567723d224ef' 
  AND token = 'Iu5KYCQd83fw+RiV1gpXLxRAbq68l5VecODagiSvH0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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