Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a7c8c2ed130d27ca19d85ce649b4bc6907beee4aae839f8b5880daddedcbb6af' 
  AND token = '7JI56MFAQdW1nnceRvBgxJSSWH0Xd/45FyaIf17eVFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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