Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '123bfa84e9fa929db4e6686b00bed74f0cfc4cc7091ea307c48137addf0afc2d' 
  AND token = '+UwaoFYgrWWC+4HQdwsDzVttNTr4SEt70a2UD0pl3dI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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