Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '435c4c6553d35d661d7ee54b38cc7a22cb63350b98396d35fc989e3c9a2d7a11' 
  AND token = 'bA8cJ3zN0IMAeQ654bp0yZ5BSwlGuCdc494vBNzv/TM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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