Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10eeb62160da3b2661f7a1ece25c453c48b95a8a94635cf1cac02821b2674882' 
  AND token = '98/juMtwp48fZ/qyyXN00JhDIQPChuaiaerLD5/MWaQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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