Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '155d3ae6a074aaf41de4bae78ad3b556f3b7adc8ca4f0323cccc3bc20dc5818e' 
  AND token = 'YSpSlP58FeMZ+7rlO3t2COI8ghhhAYORhh5HFcptvk8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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