Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d46e938a337bd19d0152f39711c67be90f74dd727e117f093973bc2baf9d1b8' 
  AND token = 'zoWxPnwQSSH6g/Yh7STmtyeP7tjOapz8luzmC6OfbIk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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