Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e022bec2120d60bcceee6e6e05ccd4ff4350590b5e42b3fb7cce3b063c7bf634' 
  AND token = 'uyDsQIkchUGE2qaa+ujXPP8LAWWpuNK/cxoSU79v7YY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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