Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d9bbd4f686ed970ade4b70f1dda0e546b471934303c20bee96a18909de04643' 
  AND token = 'SC/F1KGm5O/NR8BcNU9v5xocEGsOQqQgDtasnXeZue4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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