Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2644454038142b3be39456028f20b0643231e9bbf2ff11924ee8a888a0ee83fb' 
  AND token = '53sf38q2GboDiOIRIfujLtx+fFglgY0XZJW3bR7wysE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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