SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e5b3c27859323cc7422d96f25101d7975c5830c369ff2ecba1ba9a44b93b392' 
  AND token = 'byhTM7NyGklrzeYbHG69TKVXZ6X8guBskUwYZlEq54s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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