Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e3d29db735a5a9b20b4f897a4790d679269087993ea78f1f77e5d38356b416ea' 
  AND token = 'nq0WkqdshpBOoqcL6KSIf0JMAK+JqdbRcdeg5fvT5mc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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