Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3015e0759db8858be952f8d3df4ea2275d7a9bd084887b66971e97df0fded348' 
  AND token = 'UUSJA4LMSAjxN0HMqOjaRmB1lXbkzjDkA+BLrU360hU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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