Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f9aa73a245a7a6e022ce44f94789628628a2fc5181bd6981f6aeb6e5ee3c7e4' 
  AND token = 'qbvDwlEMP3Vs00L7sCd4Ni0XtQjTEXa3zCKoLuTBJIk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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