Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed150a4e2a3ce02b81fa6b34fe1c5c225e99492b134541863dd1471bff3e0b48' 
  AND token = 'Nrfwf+3Oh8n3rz6I4IPziwfWx8v1SxK2pympNHdT47o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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