Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6fb2a7d93f64a7d51a930b6c420f54f8aaf36d9d1a9e912238bfb69ad073a554' 
  AND token = 'AuRI27R3uCX+My35XEiQWoL9ja49HgEN2HLv9upuolA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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