Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '049d7013613bcaeb0afb2ed053e52fab66132c04232f6e7087d5ee2388247de1' 
  AND token = 'tglfYvzFpAMXNkrH1RKrRrX7y+66hZ0i9tXOgR72BCk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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