Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22d039c0921ae9ddfb903070ec6567ee594da6580a82bec1b7bea184c44297bc' 
  AND token = '4luJpOzjZPoGN7FxPS/WM1EjeuvMx2T7U4Unjjx6k2M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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