Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '55ec2966cb08081864d5345110832da8706ae7ca9a0fe225eb955af487d84dba' 
  AND token = 'VNE8ScMJ6m1/8yUYcl8NA33I06oOTtXmLPksnOKNg9Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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