Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b19d2dd4b22a5b7de820710151274b44f8bb72fe8ece3c29fc80ddff17286133' 
  AND token = 'Y9Xzoyd/xkGnc1KhrKBYrL28qcm3ZWGVocuIy848tII=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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