Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e995742c408a8eb7cb4be7a41e215aa647dbfca2da86ba29da21bb93bd944a01' 
  AND token = 'oWcZZeIZSPnRtbwD8S6e3FCaO9JhPyq/piC0ihzV2xc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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