Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce4d94d3f93a0e757f8baa95d33ab382349b30966e683b5b1c1b7275d6649289' 
  AND token = 'm4npFSRgzuQMKB45axOJbPSIfM5L51EXoZmfdfhV7Ss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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