Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56a807e9ac0c9f8414be9d5c93380520ac1b78e84d1e01c24d1094f10d35413b' 
  AND token = 'iNyoPoAEvVGN/wItfQlDIGbEdjqmq//98uYXzypmxcE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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