Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09b4e2445b568097a81386aaa9ad14d1b0e094e44d6364d9d10b8a480993a95c' 
  AND token = 'srE+hfU2RexkdkBG8UbRJtGpqCRz0Xud8hww+ujeXAw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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