SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'abf225dfba649df2237f82a98156e66417601d726b64f341f4bc8d8bc17a4ae7' 
  AND token = 'QvNPoxQgm2+Cwf2wlATArpibsE6ujpVLcXJHKXSpOVk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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