Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f4662494c97a136790072ea13e5a2a974e1cb5ce65e2e822ed0aca3a524d8e6' 
  AND token = 'lvzKifX6WEJAjhvQBXpNrm6BWfvE2rq66IVyQNjVK8o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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