Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c087a19c5350b7bd50bae3f4b01cdfd89aa2c7ba4eba2b734b68850ff63bb94' 
  AND token = 'anQnG4FNk9FvEEvuwzTSfnmYaVBsc6fHlbI9O0msL2k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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