Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ebe0cc9f17c68aed0c09e4a4ea8fe07716925b2a8f81c1bcdd06df903e01ef4' 
  AND token = 'OryKmcpD6Tz88TGeuDMP33nl6IWTyx2/ozCjkF/ALcI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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