SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '82b783efbef7a378736c77b11f4ebc5a607539543e4269b72a5c6a1bb92f3486' 
  AND token = 'EGhs5wbEIrHgASL8yKS+YzL91EFR+3ZaWIXiPbBLihI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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