Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4334f14c2e21bd9bbb9bc92c962bd54d5c9e6791197e071fbf72b4f69ba257e7' 
  AND token = '7Nv4g85Pd8cMbBuXozsKKQTtzpjvSUsn6jDXYBSIzKY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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