Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fcb6e9b580b3ffae950db94b8e0625212b283c0ebbecd9442a01e4f488c82ea6' 
  AND token = 'aeD/rV3lkOpBdBaSY0ci4sfzI1clV3Is3rOpXh+AHys=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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