Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f363eaf8f263b2f677b99155508ae2f10b1499c84b7a00e3e2c5b85b7a7a2f2' 
  AND token = 'HXHif8z6kY0o/uOXzw6b3CqN2vOLpzekDznikkeskD4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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