Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '095b12670df597153b56584a7a91dc51b83d4dd9fc5843d2b24ea75f718afeda' 
  AND token = '91qTbwLYY/BeYguBQb56As/JwgaOM8TJInZ8HgdQ21M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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