Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c1c83efafdb0628106ab0aada79c3632cec0ed504495f19712702ea7d91f091f' 
  AND token = '8pC1T/SaIF1M9rEFZ87M+Pf8ysoiYbV7ol5eUwFjVes=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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