Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02afcbe6a594b7d1b28129b8f83ef72830321d6d3ef497f7b43979f5b8cd5ad7' 
  AND token = 'gU0KfiEARoXW8N5GHGKAEQ6yTrZrLnvc4aIWlbaw2to=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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