Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab5c911dffb9abde3d394d7d3b22ae7d1892ac12090761a37f941cdac2dfd39d' 
  AND token = 'iUUdeGkqsVgX/1vtufRCYCGZcq3a16377ylnIW1WoTg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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