SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '10e1ff2fb0b6347cb830f2e58ef875849ccd41df02fc7280c2a4c567807d1ca9' 
  AND token = 'm5Y+kGggFtyoVr4/bV8zX/rltXlnqPXBYqf8mYsZ+pU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00082

JSON explain

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