SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'dae2c7026ef174e28aef6e76b287a4681e5cf6f3c2b959618407924dca595be7' 
  AND token = 'UtB+7H7Awg/BSb3Isvdx01tjYTb/r5WsPLEIDhthVqc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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