Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '56c2988d48fcf9b92a10b0080bc92b4ef2627badec4cf6e692c81ec22dfb324f' 
  AND token = 't9b307xeTYJ0Rgnmz4ZgStfhkHo9+jKAegF5YkE7rOc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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