Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04216d74d36293e0cfd517177775ec7f23e7512c5a81431f40ec6c40941ec4ee' 
  AND token = '4lA0FDgswJ4eupAeSBLZX2cYNJdUtkiDUwSMv2iyG7U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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