Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c9601c5fae68e38a911706bc78a34dfbe822778190b418e8480c96977738962d' 
  AND token = 'L8x8rO2cTwIslzaaDrLTkZuVhNda5X+BT74QAsj71x0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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