SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'ebdf28df0607609063f24205ee18d0e28227bd9614630025a9c48b375fcb5919' 
  AND token = 'NlyDD86KPLLnJ5zuRMZHP6Z2gvcoDUls4Y1lWBwzq/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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