Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd3659046845829f8d7fa9e137a2b46db6826341336eac4e6f7ace994920673ca' 
  AND token = 'a54lm5/+RORrgqcfTOAsq3/FlwZtEwTFrcX3mYnhzdI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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