Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89de069b9215d94ef92ce3c7307f6c7490ed2c83a8ab7178b2c45a9b4800bf8f' 
  AND token = 'pPb8vM7XN1XB+73pERmm5Z5O7Bq9vP9EMX+T8XcuH8w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}