Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ac63f1cc40a51a036d30c568b04517ace0ee7ad5aac20e1521825f11f869cb4' 
  AND token = '28mzKlr9Ubkt/wiQ+p173ZNwEnfhWwtqDfeaJRIX9fg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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