Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a119b85256059c56faf6cac81b4e1a4640acdac53f188e791c2c27108ba5ea8a' 
  AND token = 'aPiJIS0sIuzBBGseGomzkHrCvvqz3XzhAwQRr1Sx+yc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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