Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '71b061f40ef634a39122847598fa508a302be2e52e0ec38bc8ccdd9ee435bebc' 
  AND token = '9IRARHafyOWhjsh1tNxa/orvFn9gmzmzoXxRr2v8jr8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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