Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '445ada73a194e0c4998a4619eccada9bab569a9cf214f0860dce39658f8e4677' 
  AND token = 'itIRYjvW6sYkJJrjYQacF4J0mjQS+vWSg916++BC5js=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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