SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b0819c2d757a87260f2bb558c16f7145d147df7f9803ca78543b869c45180eb' 
  AND token = 'H3BVPaZ9wMxgxw0xOpkIKBblr5tgtdsM5zO/YiCFJdM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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