Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd829ed9c83de1bb9a82af3b580cb3d73b024ecea5a26a7e36ab11b68e7fe7039' 
  AND token = 'ygRnXOAFMCUTMdWfEv7i+yb2465wVzAn4A6EjCBoky4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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