Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0af7758ba89973f6a14205ec8a0537b8277192c0d8fed1e9d2e625842d33c782' 
  AND token = 'JJ0rZVqh/xEaaJQNkidKwTSUoaAnmG5tEbZjpnK92Ps=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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