Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fbad9e4c3e64d4137b17b360449ea96c0f5e8220aafac74850bc6f5ab3060200' 
  AND token = 'DWiM5HetsbfhBMQImVbaTWmotgTIYE+Jtweh9c50WH0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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