Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8de0b3525b57ce773463092c0681d67cebd73ec3ca366ed1d8c2246ff6389ec3' 
  AND token = 'FqYvt8sQLPq4YoXCGhlP7TARaAyML9PpqLo/ki94+h4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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