Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ff81843dd2a5de509ebd72a0f8cca337af340ae5a7883755677b5935feaa5874' 
  AND token = 'vqJlm0WKE+QmCcIw1yh6YK/ifllL2TKpi4V2faFKWEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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