Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61e39f98f54d92c34929b26b4489b34fe53416080bf3a7e688b0553bdf681825' 
  AND token = 'O08ay+VDd/k/Iw7SR/9CCbbL62if2IDRr4kKzDjtNUA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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