Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4be9411fdae4a63c123f71946986c9988522188e1e8483f5c4cdf74e14b7e1c8' 
  AND token = '3DafZB2FWGe4eDD1b2UgWQEPxH7JvIX3LmtnilQuW8M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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