Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ae261e4ec694d0f157192a35a1c8fec12b01082c67b50c7e2be25f75943ee68' 
  AND token = 'IFJTEHvdiahEzGnXp0QeN/Y7X2zB0vRDOO2CO2dxDtg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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