Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '607633d7ea9677ecfbc8a56855e179d5306d8b14c2803fb73ccf8c51c5373eb5' 
  AND token = 'CJYN920tvJ5F8L1Cc3rrZP3wcVcIYnc72aOLbTsb8lA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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