Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb493e0dc141d7bc6f4f164b708476207cdced2e491c7e7d06304fd02733465c' 
  AND token = 'AVRyoj5+6WKJ7B56V0EdyltMIl8NdE5CfNHHfGdv1kY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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