Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41469c1fbe9ecd597d4dcb7cb52ee491a12dc09815ce8a5f92a4e6f9dd92bb4f' 
  AND token = 'J7q6lCsf7Fdzg1J/iXDnqKodyt8pY/vC1rYGIdAsli4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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