SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1ee9bc2b9bf4e11c5aff3b6ffdfd300e66b0ea33cb82a8f67b255bd18e09500e' 
  AND token = 'jM9KlOCB5vDNz9TI+EDtjzgUL+2jDvBL+lzzAlJKuIQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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