Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '726006a20bb07b09112db60e8475cf1e0dc9f5d0cfb7a40cb49bca474d0d30e7' 
  AND token = 'GR6EtIZBZpNFm9qt4gq03zgz3mi9upC3i9Jb5HNnbUU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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