Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33c84c8c5eeb5893f3610f5e8025a1340362470165fc5b9634a161dcf10c06a0' 
  AND token = 'BDOVxKXOMDu36kJYWQx5FcgpFNY6/oS2MZjvP0oonIk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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