SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc32e75a3459964beff0db9cea97f62e49cab1705922791bf3d413e2990dd889' 
  AND token = 'omV5jYeVB18Oa42jlm7NGlE1IMnqyU+Owg9ZxuZuvVo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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