Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bdb666790a7c5e3812974326daf212aef3110f819276cd90b92a62acf05837e4' 
  AND token = '0U4Gw11pIgTDJOJM/317B+260FgrAr5cIB1F5wExEUM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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