Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f716cbc0b5bc333a5d16209b4a01031a5a78bcf38df92675cf90b1dedf4b931f' 
  AND token = 'NJ16EyrSI3iIbuxDfVPBUolRVXYgzPKyuVpifJrobNw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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