SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'd2e586b0fd8d55eec2b6402483a36ff0f9775388acb26685c1b07a9f9bb80eae' 
  AND token = 'lGC14Wa/brmOqU1Lu9zhYPomIfzReTxmh9jtaBGkPKU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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