Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '6628d955c519840155b0ed3f5b3ac291126607f193e1b9eaf078fc3dae0a236e' 
  AND token = '9iNLMGVPEsWqqX9RGFUQv2Fl6OJC/Kc73di60G5yDaA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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