Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '77769c8bee48b4191ad6de1b91e34a04f946ef582326a53190a38c0cef7d4d0a' 
  AND token = 'pXBmjc4fBYgtMtZc3ilKQNRFKOVJZQ6X2lxf2tkLSFs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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