Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c0d6c7fb74148f033ec78a93cf4e40af580b42bad4bd3c9e47de7d7995cb81e' 
  AND token = 'v6w0IPulbfEaIR+OCx9XPZ9viO7Srfi3hdD1DPMEBps=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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