Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2cff487f47e7fbd829c23c250aab4dafed85ff298166d5cf8a56af158f00f0ce' 
  AND token = 'N8I+5gS0aZrQozBqY3EqcM4M8tEzLiUNERwr6TjzQlQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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