Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '894be8787dad8e06ae7a8153e0347f24c857a86438f72af641bb16e127ab7eab' 
  AND token = 'SsOMSUOQXbfax5DDiQCnnYUWtZz53WRBY/CpwNCZIBY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}