Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3007b183d9a6683950e69ab67fab9c760fb7a14bef3a91e9f472b0ef66a40528' 
  AND token = 'QiTbGnKW8f5WZC3H6yAVuETkxPIb4caSATr0Uwc3GVo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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