Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8428acf23ae44e2975b6ba8dcf17a9418e8513195bb6729868859408c826995e' 
  AND token = 'h0oSRi35VfsU5if3G5QlKA+zyo9yuHEXGekEExZisHo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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