Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '534274fdbedf4a8b892a811a634e9446490737510884d1fbfdab97b09bd8fd7c' 
  AND token = 'X9hoR2eBBNXBPr+36OhTJveNEBM849anHwYBBx0iSgY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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