Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed1c340db578c87152f8d7624a4bd85b4a7cf869a05860cdb3172212f2089b0b' 
  AND token = 'dRBxi01sQUqPQ5DLmAb2qqFnvXLFSKbh4QbLB+drZps=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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