Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'df151c6c1c30e885e84efc322a6bf76b8070886d7e9d9aa330e6bf68c7f63906' 
  AND token = 'vJaCtNbKEX7pSimb0BjhLVY2MfumIKfkZOYMrBCgM10=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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