Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '77320f8f6e20e200ee253521d6468be45ef263438dd89a9a951f8c279e88a914' 
  AND token = 'I6GIfEY1dxAyvQ8pxulKwwAKclJfskDHz8kk0yywuS4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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