Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a3728ab12de1a0a83698a265e1ed14d82d587a2cef0c775fd7463f98015aff4' 
  AND token = '18nKXEeogE8aAKB8rV1/BISM8n9XbBa4uYjFZZMGROA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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