Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '733cc1f78445154e51e1430bb801c19b0e39dcb4bfdd6d4e3cfcd389f6db9118' 
  AND token = 'bNoknVxxlbhhIf2zrefc+WSaSOu3FyS6/jdusO57Rls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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