Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '28aca0b4cc61f992a739ac0f3a5e3a46cd15393743d95be5cb6ef1c36ec21654' 
  AND token = 'kwwL1CPPuarEHWPLaNViuq+OVOkFwiJEODhbU5AxTio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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