Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aaeaa6da7b5a349ed88a30fea826feba0e5fa134b270c409249634eb82caad96' 
  AND token = 'bTgWPJrUprAVHjnq+CSOPIcrYxVH15F013hYJ9N9wwY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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