Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e70115d01995a062277f280199f7c960afceb2fbb598b660b76262ac6725292' 
  AND token = 'jY5wR6qV5//vuWZUBhiaLYIL8C+35369ddcVH0ijgbE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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