Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8cdafd896564d72af5c2d02848d60517a63959e94d5c28d5908959f39b408a0a' 
  AND token = 'Vm1JJsJzQgjB35HewtN3lFg3rerIn2MDej5K2tJeeDE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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