Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e551a9096c0fe0fe2729090f92d021d3ebcd2dec5a571577c70c81c481d6287' 
  AND token = 'h+IVBRE/91714WHtYGv1gPG1tOQ/6yDuUwIUhePYBhc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00071

JSON explain

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