Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '772c79d84869fee88bbcb7eb5aabf3e024abfac6ebaf24b8171553e860b240cb' 
  AND token = '4dY+J42vY5F1pCxOdc10t5MTZ3iLTBi70xsPuCJKmf0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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